Home / 20,850.26-28,772.25-11,898.59

Finding the Fourth Proportional to 20,850.26, 28,772.25 and 11,898.59

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Solution

The fourth proportional to 20,850.26, 28,772.25 and 11,898.59 is: 16,419.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.26 : 28,772.25 = 11,898.59 : x
  2. Step 2: Convert to fraction form
    20,850.26/28,772.25 = 11,898.59/x
  3. Step 3: Cross multiply
    20,850.26x = 28,772.25 × 11,898.59
  4. Step 4: Simplify right side
    20,850.26x = 342,349,278.06
  5. Step 5: Solve for x
    x = 342,349,278.06/20,850.26
  6. Step 6: Final answer
    x = 16,419.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.